Rotor having freewheel

Abstract

An operative insert for a device for processing foods and a device for processing foods including such an operative insert, the device having a receptacle for the operative insert that is driven rotationally about an axis of rotation (R), to which receptacle the operative insert can be detachably fastened in a torque-locked manner by a drive interface, wherein the operative insert bears at least one working element, which can be driven rotationally in a working direction by the drive interface and which can be decoupled from the drive interface in regard to the rotational motion by a freewheel when the direction of rotation of the drive interface is reversed.

The invention claimed is: 
     
       1. An operative insert for a device for processing foodstuffs, the operative insert comprising:
 a drive interface rotatatable in both a working direction and a reverse direction, 
 a deflector locked on the drive interface, 
 a support spindle driven in rotational movement in a working direction by the drive interface and 
 a freewheel to uncouple the support spindle from the drive interface relation to the rotational movement, 
 the operative insert for disposition onto a receptacle of the device, the operative insert driven in rotation about an axis of rotation (R) with the drive interface, and 
 the support spindle including at least one foodstuff working element, and 
 wherein, upon rotation of the drive interface in the reverse direction, the support spindle is uncoupled from the drive interface in relation to the rotational movement by the freewheel. 
 
     
     
       2. The operative insert according to  claim 1 , wherein the freewheel comprises at least one of a clamping roller freewheel, a clamping body freewheel, a wrap spring freewheel, a ratchet freewheel and a locking member freewheel. 
     
     
       3. The operative insert according to  claim 2 , wherein the freewheel comprises a coupling part having a toothed end face and a driver part, wherein the coupling part is arranged between the drive interface and the driver part and is displaceable into a locking position, wherein torque is transmitted between the drive interface and the driver part in the locking position, wherein the toothed end face and the driver part are disposed to displace the coupling part into the locking position upon rotation of the drive interface in the working direction and to enable displacement of the coupling part from the locking position to a release position upon rotation of the drive interface in the reverse direction. 
     
     
       4. The operative insert according to  claim 3 , wherein a plurality of teeth positioned on the toothed end face engage a plurality of recesses in the coupling part, each of the teeth include a beveled ramp which together with the recess whereby, on rotation of the drive interface in the reverse direction, a twisting movement between the coupling part and the driver part axially displaces the coupling part from the locking position into a release position. 
     
     
       5. The operative insert according to  claim 3 , wherein the coupling part comprise spring elements or beveled surfaces arranged on the drive interface and on the coupling part, whereby on rotation of the drive interface in the working direction, a twisting movement between the drive interface and the coupling part axially displaces the coupling part into the locking position, wherein at least a stop is fitted to the drive interface and to the coupling part whereby rotation of the drive interface in working direction, limits twisting movement between the drive interface and the coupling part and causes torque to be transmitted between the drive interface and the coupling part. 
     
     
       6. The operative insert according to  claim 1 , wherein the at least one foodstuff working element comprises at least one of at least one knife, a blending blade, a peeling arm, a stirring blade and a kneading finger. 
     
     
       7. The operative insert according to  claim 1 , wherein the freewheel uncouples the at least one foodstuff working element from the drive interface and the deflector upon the rotational movement of said drive interface in the reverse direction. 
     
     
       8. The operative insert according to  claim 1 , wherein the at least one foodstuff working element acts in a circumferential direction of the support spindle and is pivotable relative to at least one further foodstuff working element within a limited pivot angle about the support spindle. 
     
     
       9. The operative insert according to  claim 1 , wherein the freewheel comprises a switchable and/or a lockable freewheel. 
     
     
       10. The operative insert according to  claim 1 , wherein the drive interface comprises a drive journal. 
     
     
       11. The operative insert according to  claim 1 , wherein at least one first foodstuff working element arranged on the support spindle and acting in a circumferential direction of the support spindle is pivotable relative to at least one second foodstuff working element within a limited pivot angle about the support spindle, wherein the first and second foodstuff working elements are oriented radially in relation to the support spindle. 
     
     
       12. The operative insert according to  claim 1 , wherein the drive interface comprises a drive journal with a terminal external polygon. 
     
     
       13. The operative insert according to  claim 1 , wherein the support spindle bears at least two foodstuff working elements and wherein, upon rotation of the drive interface in the reverse direction, the support spindle bearing the at least two foodstuff working elements is uncoupled from the drive interface in relation to the rotational movement by the freewheel. 
     
     
       14. The operative insert according to  claim 1 , wherein the deflector is an upper downward deflector or a lower upward deflector. 
     
     
       15. A device for processing foodstuffs comprising a drive, an operative insert, and a container for receiving the foodstuffs to be processed, the device having a receptacle for the operative insert, the operative insert comprising:
 a drive interface rotatable in both a working direction and a reverse direction, 
 a deflector locked to the drive interface, 
 a support spindle releasably fastened to the drive interface, the support spindle bearing at least one foodstuff working element and driven in rotational movement in a working direction by the drive interface, and 
 a freewheel to uncouple the support spindle from the drive interface in relation to the rotational movement of the support spindle, 
 wherein the operative insert is driven in rotation about an axis of rotation (R) with the drive interface, and wherein, upon rotation of the drive interface in the reverse direction, the support spindle is uncoupled from the drive interface in relation to the rotational movement by the freewheel. 
 
     
     
       16. The device for processing foodstuffs according to  claim 15 , wherein the drive comprises at least one of a manually operable crank drive, cord pull drive, toggle lever drive and a humming top drive. 
     
     
       17. The device for processing foodstuffs according to  claim 13 , wherein the operative insert is mounted with an end lying opposite the drive interface. 
     
     
       18. The device for processing foodstuffs according to  claim 15 , wherein the support spindle bears at least two foodstuff working elements and wherein, upon rotation of the drive interface in the reverse direction, the support spindle bearing the at least two foodstuff working elements is uncoupled from the drive interface in relation to the rotational movement by the freewheel. 
     
     
       19. The device for processing foodstuffs according to  claim 15 , wherein the deflector is an upper downward deflector or a lower upward deflector.